Figure 1. MRI -‐ Sagittal FS T2 weighted image: A) Database evaluation: There is a defective osseous site in the medial femoral condyle with a bone fragment detached from the native underlying bone by a linear hyperintense image (unstable fragment). B) MRI follow-‐up after first year of surgery shows the chondral surface after graft harvesting with slight T2 hyperintensity in the medulla and with no definite cortical margin of the osteochondral fragment. C) Two-‐year follow-‐up showed decreased T2 signal in the subchondral medulla, better definition of the cortical margins, and leveling of the surface without chondral erosions (arrows) : Osteochondritis Dissecans Treated With Autograft Cartilage Transplantation System (Mosaicplasty): MRI Contribution on Patient Follow-up - Case Report : Science and Education Publishing

Figure 1. MRI -‐ Sagittal FS T2 weighted image: A) Database evaluation: There is a defective osseous site in the medial femoral condyle with a bone fragment detached from the native underlying bone by a linear hyperintense image (unstable fragment). B) MRI follow-‐up after first year of surgery shows the chondral surface after graft harvesting with slight T2 hyperintensity in the medulla and with no definite cortical margin of the osteochondral fragment. C) Two-‐year follow-‐up showed decreased T2 signal in the subchondral medulla, better definition of the cortical margins, and leveling of the surface without chondral erosions (arrows)

American Journal of Medical Case Reports. 2015, 3(11), 374-376 doi:10.12691/ajmcr-3-11-7